Vacuum-bottle.



A. C. BECKER.

VACUUM BOTTLE.

APPLICATION FILED JAN.12,1917.

1. 269,946. Patented Mar. 19, 1918.

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ADOLPI-I C. BECKER, OF OAKVILLE, CONNECTICUT, ASSIGNOR TO EVATERBURY MFG. 00.,

0F WATERBURY, CONNECTICUT, A CORPORATION.

VACUUM-BOTTLE.

Specification of Letters Patent.

Patented Mar. 19, 1918.

Application filed January 12, 1917. Serial No. 141,984.

To all whom it may concern:

Be it known that I, AnoLrH C. BECKER, a citizen of the United States, residing at Oakville, in the county of Litchfield and State of Connecticut, have invented a new and useful Improvement in Vacuum-Bottles; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Figure 1 a View in central longitudinal section of a vacuum bottle constructed in accordance with my invention.

Fig. 2 a reverse view thereof.

Fig. 3 a detached perspective view of one form which the insulating-button-like support may assume.

Fig. 4: an edge view of a modified form thereof.

My invention relates to improvement in vacuum or double-walled bottles, the object being to provide a simple and durable article of the character described, constructed with particular reference to the support of its inner part or fluid-container when the same is full and the bottle laid on its side.

With these ends in view, my invention consists in a vacuum bottle having certain details of construction as will be hereinafter described and pointed out in the claim.

In carrying out my invention, I employ an insulating button-like support 2 made of any suitable insulating material, such as asbestos, carbon, &c., and interposed between the center of the rounded bottom of the inner wall or fluid-container 3 of the bottle and the outer wall or shell 4 thereof, the said walls 3 and i being joined at the mouth of the bottle by the integral bend or lip 5 and the outer wall 4- beine formed, as shown, with a nipple 6 through which the concentric vacuum-chamber 7 between the two walls is exhausted. tho gh th s may e done at some other point, if desired. The said button-like support 2 is formed upon its inner face with an axial socket 8 for the reception of a stem 9 formed integral with, as shown, or attached to, the center of the rounded bottom of the inner wall or fluidcontainer 3, the said stem 9 moving back and forth in the socket 8 to compensate for the contraction and expansion of the inner wall 3. For the reception and retention in place of the button-like support 8, the rounded bottom of the outer wall or shell i is formed at its center with a shallow circular recess 10 forming a slight protuberance upon its outer face, as shown in Fig. 1. For reducing the points of contact between the support 2 and the walls of the recess 10 to the minimum, and hence minimizing the radiation of heat in either direction through the support 2 and stem 9, the former is made, as shown, with peripheral grooves 11 and face grooves 12, whereby the button is supported in the recess 10 upon a series of points 13.

In the modified form ofsupport shown by Fig. l, the support 14 is formed with external corrugations 15 which are tapered so as to merge into each other at 16. \Vith such a support, the same rests upon the walls of the recess 10 on the exterior surfaces of the ribs 16 at about the points 1? thereof.

By corrugating the button-like support, as shown in Figs. 3 and 4, it is apparent that provision is made for the outward passage of a r, so that, if desired, the vacuum-chamber 7 may be exhausted by tapping the shell 4 at the recess 10, in which case the nipple 6 would not be produced.

It is apparent that when my improved bottle is laid on its side. the fluid-container 3 is su ported at its extreme ends, that is to say, by the lip 5 and the stem 9. the latter through the support 2 wh ch is relatively so small and the area of its total contact with the stem 9 and outer wall 4 so limited that little heat is lost by radiation.

I claim:

A vacuum or double-walled bottle having theronnded bottom of its inner wall or fluidcontainer formed w th a centrally arranged outwardly projecting stem. and the rounded bottom of i s outer wall formed with a oro tuherance al ned with the said stem and providing an interior positioning-recess. and an insulating bu ton-l ke support formed in its inner face with a socket to receive the said stem which plays back and forth in the said socket with the expansion and contrac- In testimony whereof, I have signed this tion of the inner wall of the bottle, and havspecification in the presence of two subscribing its outer periphery corrugated for the ing Witnesses.

production of points upon which it rests ADOLPH C. BECKER. 5 in the said recess, whereby passages are \Vitnesses.

formed between the Walls of the recess and J. S. NEA'GLE,

the exterior surface of the button. K. M. BROWN.

Copies of this patent may be obtained for =five cents each. by addressing the Commissioner of Patents.

' Washington, D. C. 

